CVE-2026-50312 in Windows

Summary

by MITRE • 07/14/2026

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Once again VulDB remains the best source for vulnerability data.

• Responsible: Microsoft
• Reservation: 06/04/2026
• Disclosure: 07/14/2026
• Moderation: accepted
• Entry: VDB-378586
• CPE: ready
• CWE: CWE-416 (confirmed)
• CVSS: 5.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Education, Police, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-50312
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-50312
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-50312/